baber/WOPTO huggingface dataset:
Patent GB-1171677-A (GB)
Title: Radial Flow Fan for Pneumatic Conveying Installations
IPC: F04D29/16
Filed: 1967-06-02
Abstract: 1,171, 677. Centrifugal fans. LUWA A. G. June 2, 1967 [June 8, 1966], No.25641/67. Heading F1C. A radial-flow for pneumatic conveying installations comprises a non-rotating diaphragm 11 forming a rigid guide surface for the flow through the fan impeller 16, the diaphragm being arranged to be capable of axial deflection in a resilient manner relative to the impeller to permit a wobble movement of the diaphragm in the event of entry into the fan of a foreign body. The diaphragm 11, which comprises a conical main part 13 and outer and inner flanges 12, 14, is resiliently connected to a wall 1 by bolts 5 and springs 24 and is sealed to the wall by a flexible sealing ring 15 and a flexible bellows 23. If any of the material, e.g., textile fibres, being conveyed in the air flowing through the fan becomes trapped in the gap between the impeller blades 18 and the conical part 13 of the diaphragm, the trapped material presses the diaphragm locally away from the impeller so that the diaphragm is given a wobble motion as the material is carried round by the impeller. The local increase in the gap between the impeller and the diaphragm, which increases in the radially outward direction, permits the release of the trapped material this release being further promoted by centrifugal force. The springs 24 may be replaced by other resilient means such as rubber or synthetic plastics material. It is stated to be known to provide a non-rotating flexible membrane, as of rubber, at each side of the impeller of a pump for conveying sand, gravel or waste water, the membranes being acted upon from the outside by a pressure medium.
Patent GB-1016694-A (GB)
Title: Improvements relating to fluid flow control valves
Inventor: LYNES ROBERT KITCHENER
IPC: F16K31/365
Filed: 1961-07-15
Abstract: 1,016,694. Valves. RAINSFORD & LYNES Ltd., and R. K. LYNES. July 11, 1962 [July 15, 1961], No. 25716/61. Heading F2V. A valve comprises a valve closure 22 connected to a diaphragm 13, preferably of metal, and controlling the flow of fluid from an inlet 11 to an outlet 12. The valve is urged to an open position by a spring 16 and is closed by fluid pressure acting on the diaphragm. The diaphragm provides a snap-action so that the valve closure is either seated or fully open with changes in pressure acting on the diaphragm. The valve may be used to control fuel flow to a flushing light.
Patent GB-757514-A (GB)
Title: Improvements in or relating to rotary positive-displacement pumps having intermeshing rotors
Inventor: SAY ALAN WILLIAM
IPC: F04C15/00
Filed: 1953-09-21
Abstract: 757,514. Rotary pumps. PLESSEY CO., Ltd. Sept. 13, 1954 [Sept. 21, 1953], No. 25972/53. Class 110(2) A gear pump for delivering liquid at a high pressure has grooves 22 formed in flanges 19 of the end bushes for connecting the high pressure zone at the discharge port 8 with the bottoms of the spaces between the roots of the gear teeth just before said spaces would normally come into communication with the high pressure zone so that air or vapour trapped in the bottom of said spaces is dispersed before said spaces reach the discharge port so preventing pitting or erosion of the bush faces.
Patent GB-988392-A (GB)
Title: Improvements relating to vapour phase oxidation of halides
Inventor: GROVES JAMES DENNIS
IPC: B01J8/42
Filed: 1960-07-26
Abstract: The vapour of a metal or metalloid halide which is to be oxidized is preheated by passage through a bed of particulate electrically conductive material so as to fluidize the bed and an electric current is passed through the bed whereby it is heated to impart heat to the vapour during its passage through the bed.  In the apparatus described, see Fig. 1, the halide to be oxidized is passed in liquid form via conduit 9 to the lower space 12 of silica tube 1, the latter being surrounded by a wire-wound electric furnace shown in three sections 2, 3 and 4.  The halide is vaporized in space 12 by means of heater 4.  Sintered silica disc 13 supports a bed 14 of particulate material preferably amorphous carbon and/or graphite of particle size 200 to 700 microns that is substantially inert with respect to the halide vapour and is of sufficiently high electrical resistance in the fluidized state for efficient heat conversion. There may be included in the bed an inert mineral substance such as silica or refractory silicate to increase the electrical resistance.  Carbon electrodes 27 and 28 are adjustably mounted in limbs 23 and 24. The wall of the chamber containing the fluidized bed is lined or made of an inert refractory material, e.g. silica, alumina-silica or carbon. When using carbon, the lining may be employed <PICT:0988392/C1/1> <PICT:0988392/C1/2> as one of the electrodes, the other being placed centrally along the axis of the chamber. Conduit 16 leads to an oxidation furnace 17 (see Fig. 2) having an oxygen inlet 22. Alternatively the oxidation may be carried out in the upper portion of the silica tube.  In operation, the silica tube is swept out with nitrogen supplied through conduit 10 and the bed temperature raised to 400 DEG  C. by heaters 3 and 4.  The nitrogen flow is stopped, the liquid halide admitted and the bed temperature raised to 1500 DEG  C. by means of current applied to the electrodes, thus causing the halide vapour to be heated to this temperature on passage through the bed.  The heated vapour is then passed to the oxidation furnace where it is oxidized with oxygen or an oxygen-containing gas, e.g. water vapour.  The halides mentioned are titanium, tetrahalides, silicon tetrahalides, zirconium halides, aluminium halides, hafnium tetrachloride, chromium chloride, ferrous chloride and ferric chloride.  Mixtures of halides may also be employed.  Instead of one fluidized bed a plurality of fluidized beds in series or parallel may be employed.  Specification 791,657 is referred to.
Patent GB-599713-A (GB)
Title: Manufacture of alkyl-substituted dicyandiamides
IPC: C07D233/64
Filed: 1945-10-08
Abstract: Alkyl-substituted dicyandiamides of the general formula R-NH-C( : NR1)-NH-CN, wherein R represents an alkyl (or cycloalkyl) group and R1 hydrogen or an alkyl (or cycloalkyl) group, are manufactured by the interaction of N-alkyl-N1-cyano-S-alkylisothioureas, of the general formula R.N = C(SR11)-NH-CN (wherein R11 represents a lower alkyl group), with ammonia or a primary aliphatic amine.  In examples: (1) N-methyl-N1-cyano-S-methylisothiourea is heated in a closed vessel with a saturated solution of ammonia in ethanol to produce o -methyldicyandiamide; the product may be coverted into its salts with picric and flavianic acids by mixing alcoholic solutions of the acids and the base; (2) N - ethyl - N1 - cyano - S - methylisothiourea similarly yields o -ethyldicyandiamide and its picric and flavianic acid salts; (3) N-isopropyl-N1-cyano-S-methylisothiourea similarly yields o -isopropyldicyandiamide; (4) N-n-propyl-N1-cyano-S-methylisothiourea similarly yields o -n-propyldicyandiamide; (5) N-n-butyl-N1-cyano-S-methylisothiourea similarly yields o -n-butyldicyandiamide; (6) N-isobutyl-N1-cyano-S-methylisothiourea similarly yields o -isobutyldicyandiamide; (7) the alcoholic ammonia in (1) is replaced by aqueous methylamine solution, producing o  : o 1-dimethyldicyandiamide; (8) aqueous ethylamine solution similarly yields o  - methyl - o 1 - ethyldicyandiamide; (9) n-butylamine (in ethanol) similarly yields o -methyl - o 1 - n - butyldicyandiamide; (10) N-isopropyl - N1 - cyano - S - methylisothiourea is heated in a closed vessel with n-propylamine to give o  - n - propyl - o 1 - isopropyldicyandiamide; (11) N - ethyl - N1 - cyano - S - methylisothiourea and isopropylamine similarly yield N2 - ethyl - N3 - isopropyldicyandiamide; (12) N - isopropyl - N1 - cyano - S - methylisothiourea and aqueous ethylamine solution yield the same product; (13) N - isopropyl - N1 - cyano - S - methylisothiourea and isopropylamine similarly yield N2 : N3-di-isopropyldicyandiamide; (14) n-butylamine similarly yields N2 - isopropyl - N3 - n - butyldicyandiamide; (15) cyclohexylamine similarly yields N2 - isopropyl - N3 - - cyclohexyldicyandiamide. Specification 599,714 is referred to.  N-Alkyl-N1-cyano-S-alkylisothioureas are obtainable by the interaction of the appropriate alkyl isothioeyanate (e.g. methyl, ethyl, n- or iso-propyl or n- or iso-butyl isothiocyanate) with sodium cyanamide in alcohol, and alkylation of the resulting N-alkyl-N1-cyanoisothiourea sodium salt, e.g. with methyl iodide.
Patent GB-673789-A (GB)
Title: Marine power plant
IPC: F01K7/02
Filed: 1950-10-26
Abstract: 673,789. Propelling ships. AKT.-GES. WESER. Oct. 26, 1950 [Dec. 31, 1949], No. 26174/50. Class 114. A ship's power plant comprises a steam reciprocating engine 1 driving the propeller shaft 2 directly, an exhaust steam turbine 7 and an I.C. engine 3, both driving through reduction gearing and hydraulic couplings 6, 9. The turbine is mounted on the gear casing.
Patent GB-877459-A (GB)
Title: Improvements in or relating to veterinary preparations containing antibiotics
Inventor: UVAROV OLGA
IPC: A61K9/00
Filed: 1958-08-14
Abstract: A veterinary preparation for the treatment of mastitis comprises one or more of the following antibiotics: novobiocin and salts thereof, dihydronovobiocin and salts thereof and chloramphenicol, in a medium consisting of a mineral oil gelled with a parenterally acceptable metal soap.  Specified salts of novobiocin and dihydronovobiocin are the potassium and sodium salts.  The metal soaps are commercial aluminium or lithium stearate or soaps of these metals with long chain aliphatic acids containing 10 to 28 carbon atoms and mixtures thereof.  Aluminium stearate is used in a concentration of 1 to 8% and preferably 3% of the final product and lithium stearate in a concentration of 0.1 to 10% and preferably 0.6 to 1%.  The term mineral oil covers mixtures of hydrocarbons known as liquid and light liquid paraffin and mixtures of the same with white or yellow soft paraffins or petroleum jellies.  The amount of antibiotic used in the preparation is 3.5 to 18% and preferably 8.6% for novobiocin, dihydronovobiocin or their salts, 5 to 15% and preferably 10% for chloramphenicol.  Additional antibiotics may be included e.g. penicillin, streptomycin and dihydrostreptomycin or their salts such as procaine penicillin G and streptomycin or dihydrostreptomycin sulphate and in particular chlorotetracycline, oxytetracycline or tetracycline in a concentration of 2.5-10%. Specifications 665,367, 678,823 and 792,559 also are referred to.
Patent GB-708143-A (GB)
Title: Improvements in or relating to pressure reducing valves
IPC: G05D16/16
Filed: 1951-11-09
Abstract: 708,143. Pressure reducing valves. BRITISH OXYGEN CO., Ltd., ROBERTSON, A. A. C., and STEVENTON, C. F. Dec. 18, 1952 [Nov. 9, 1951], No. 26309/51. Class 135 This invention relates to fluid pressure loaded pressure reducing valves in which the pressure responsive actuating member 4 of the main valve 3 is loaded by fluid pressure under the control of a pilot valve 9 actuated by a further pressure responsive member 10 loaded by a spring 11 and exposed to the loading pressure of the main valve. Such valves may be "direct acting ", i.e. the inlet pressure tends to open the valve, or inverse acting, i.e. inlet pressure tends to close the valve. The invention is specifically concerned with regulators of the type in which an inverse acting pilot valve controls the loading of a direct acting main valve or in which a direct acting pilot valve controls the loading of an inverse-acting main valve. According to the invention the ratio of the area of the pilot valve 9 exposed to the high or inlet pressure to the area of the pilot valve actuating member 10 exposed to the intermediate or loading pressure is substantially equal to the ratio of the main valve 3 exposed to the inlet pressure to the area of the actuating member 4 of the main valve exposed to the final or reduced pressure. In this way the reduced pressure is maintained substantially constant despite variations in inlet pressure. The pilot valve discharges to atmosphere or the low pressure line through a restriction such as a coiled capillary tube, or a piece of sintered metal or porous ceramic 13. The spring 11 may be adjusted by a screw 12. A passage 6 leads from the main inlet 1 to the pilot valve 9.
Patent GB-250117-A (GB)
Title: Feeding and distributing apparatus for roller mills
IPC: B02C4/28
Filed: 1925-10-21
Abstract: 250,117. Hoberecht, A. Oct. 21, 1925. Roller mills. - In feeding and distributing apparatus for roller mills, the grain or stock is fed to a rotary distributing- member which throws it against walls or deflecting surfaces which deliver it to the rollers. As shown, Figs. 1 and 3, the grain &c. supplied by a spout 35 passes down through a thimble 34 and adjustable sleeve 38 to a rotary feeding-pan 36 which throws it outwardly and upwardly upon a stationary conical deflecting-ring 40 whence it falls upon a stationary circular plate 41, which retains any foreign objects such as bolts or nuts present in the material, and is then directed by a stationary conical deflecting- ring 44 towards the centre of a rotary distributor 45 which has openings 50 in its side wall 49 and is surrounded by an adjustable deflector 61. The material thrown outwardly through the openings 50 strikes the side and end walls 19, 17 of the rectangular housing 16, and is directed by inclined boards 11. 12 to the grinding-rollers 9, 10. The pan 36 and distributor 45 are carried by a vertical shaft 25 driven through bevel gearing 27, 60 from the driving-shaft 28, and the sleeve 38 is adjustably secured by means of a set-screw 39 to the thimble 34 so that the distance between the lower end of the sleeve and the pan can be regulated. A transparent circular casing 30 surrounds the pan 36 and sleeve 38, and the top 31 of the casing and the plate 33 carrying the thimble 34 are supported by means of bolts 32. The size of the outlet openings 50 of the distributor is controlled by an internal notched ring 51 which is held in the adjusted position by means of a bolt passing through a slot in the upper edge of the wall 49. The deflector 61 preferably consists of an annular ring of circular cross-section and is adjustably suspended by means of bolts 60 from the top wall 21 of the housing 16. The side walls 19 of the housing are adjustable towards or from each other. Specification 111,315 is referred to.
Patent GB-943113-A (GB)
Title: Improvements relating to reproduction papers
IPC: D21H19/40
Filed: 1961-07-20
Abstract: A composition for coating paper &c. (see Division B2) comprises silica, barium sulphate and starch, and may contain also a binder. The coating compositions used in the examples: comprise (1) water, colloidal silica, blanc fixe, corn starch and polyvinyl alcohol; and (2 and 3) water, colloidal silica, blanc fixe, rice starch, casein, borax and ammonia.  Specification 647,197 is referred to.ALSO:A precoated sheet, for use in making a light-sensitive reproduction sheet, comprises a base sheet covered by a discontinuous layer of a substantially uniform mixture of silica, barium sulphate and starch in the proportion of one part by weight of silica to between one and twenty parts by weight of barium sulphate and starch.  The base sheet may be of paper, fabric, cellulose acetate, polyester or polyvinyl resin.  The particles of silica may be of colloidal size, those of barium sulphate may be larger.  The coating may also contain a binder, e.g. casein and its salts, gelatin, emulsions of polyvinyl acetate, polyvinyl alcohol, gum arabic or the like.  The coating may be applied in aqueous suspension.  Specification 647,197 is referred to.
Patent GB-1285328-A (GB)
Title: Clutch actuating devices
IPC: F16D25/10
Filed: 1971-04-19
Abstract: 1285328 Friction clutches DAIMLER-BENZ AG 19 April 1971 [8 April 1970] 26353/71 Heading F2C In an hydraulically operated actuating mechanism for two friction clutches 12, 13 wherein an actuating piston 17 for the first clutch 12 forms a cylinder 18 for the actuating piston 19 of the second clutch 13, the piston 17 is divided into two parts 23, 24. The piston 17 slides in a chamber 16 formed in a housing 11. The second part 24 of the piston 17 has a circumferential projection 26 engageable with the first part 23 of the piston. Radial grooves 27 are provided in the projection 26 and the second part 24 is held against rotation relative to the housing 11 by pins 25. When pressure liquid is supplied to the chamber 16 alone both parts 23, 24 of the piston 17 move right to engage the clutch 12 alone and the engaging force is the combined action of both piston parts 23, 24. When pressure liquid is supplied to the chamber 18 alone to engage the clutch 13 the pressure in the chamber 18 is sufficient to overcome the centrifugally induced pressure of the residual liquid in the chamber 16. When pressure liquid is supplied to both chambers 16, 18 to engage both clutches the first part 23 of the piston 17 acts alone to provide the clutch engaging pressure for the first clutch 12.
Patent GB-1014977-A (GB)
Title: Metal rimmed plastics cartridge case
IPC: F42B5/307
Filed: 1963-07-03
Abstract: 1,014,977. Cartridge case. OLIN MATHIESON CHEMICAL CORPORATION. July 3, 1963 [July 16, 1962], No. 26385/63. Heading F3A. A cartridge case has a tubular body of thermoplastic resin and at one end an integrally formed head which has an opening for a primer and an outwardly extending rim covered by a metal cap extending over the whole of the rim the edges of the cap being submerged into the resin ahead of the rim. In Fig. 3 a cartridge case 20 of material such as polypropylene, polyethylene or a polyolefine comprises a thin tubular wall 21 a rim 23 and a thicker integral head 22 with an opening 24 to hold a primer and is shown held in a die 41. A metal cap 16 (of steel, brass or aluminium) is fitted to have a front bevelled flange 17 with its edge 18 embedded in the case and to form a stepped lining 19 to the primer opening 24. In Fig. 4 a centre orifice in the cover base 56 is large enough to expose part of the plastics base 60 so that the primer 59 can be inserted directly in the opening 54 with frictional retention. The cartridge is filled with propellant explosive 66, flanged wad 67, filler wads 68 and shot 69 and closed at the mouth by folded segments 71.
Patent GB-502910-A (GB)
Title: Improvements in sporting cartridges and in tools for use in the manufacture thereof
IPC: F42B33/12
Filed: 1937-09-29
Abstract: 502,910. Sporting cartridges. HOLLAND, J. E. D., and MANSFIELD, W. Sept. 29, 1937, No. 26388. [Class 9 (i)] Relates to the manufacture of sporting cartridges of the kind which are closed, without the intervention of an over-shot wad, by locally deforming the mouth end of the cartridge to provide regularly spaced crimps as distinct from slits, the crimped end being turned over without the formation of an annular bead around the rim or edge of the cartridge. According to the invention, such a cartridge is formed in a single continuous operation. The tool for performing this operation 'as shown in Fig. 1 (Prov.) comprises an outer cylindrical member l which is cut away at its lower end to enable a cartridge 2 to be placed in position and is provided with regularly spaced ribs 3 which locally deform the mouth of the cartridge and form regularly spaced crimps therein. An inner member 4, slidably mounted within the member 1, has a head Ž which is grooved to allow it to move downwards relatively tothe ribs 3, the member 4 being reciprocated by a cam 9 mounted on a shaft 10 driven by any suitable means. A spring 6 is interposed between the top of the member 1 and a nut 7 on the member 4. In operation, after the cartridge has been placed in position on the table 8 beneath the tool, the shaft 10 and cam 9 are rotated and the member 4 moved downwards. During the first portion of its stroke the members 1 and 4 are constrained by the spring 6 to move together and the top of the cartridge is formed with regularly spaced crimps by the ribs 3. When the member 1 abuts against the table 8; the member 4 continues to move downwards and the head 5 completes the closure of the cartridge as shown in Fig. 4 (Prov.). Fig. 1 (Comp.) shows a modified construction of tool in which the ribs 3 are formed on a block 11 which is received within a boring in the outer member 1 and abuts a shoulder 12 therein, the block being drilled to receive the inner member 4 and the head 5 grooved to pass over the ribs 3. In addition, to hold the cartridge against movement when the tool moves on its return stroke, the table 8 is formed with a shoulder 13 which provides a recess 14 to receive part of the rim at the base of the cartridge. The inner member 4 can also have secured to it a standard' taper sleeve 16 to enable the tool to be fitted into a standard chuck on a machine and the sleeve e may be extended at 17 to form a housing for the spring 6, the housing sliding over a cylindrical extension on the block 11.
Patent GB-313377-A (GB)
Title: Improvements in and relating to rolling contact bearings
IPC: F16C35/073
Filed: 1928-09-14
Abstract: 313,377. Sehmisch, 0., and Maschinenfabrik Rheinland Akt.-Ges. Sept. 14, 1928. Securing bearings on shafts.-A bearing race ring 12, Fig. 4, is held in position on a shaft by an outwardly bent lip 16. The supporting surface 13 on the shaft may be conical or cylindrical and may be of larger diameter than the shaft 1. The abutment collar 17 may be replaced by an additional lip 16. In a modification, particularly for the crankshafts of agricultural machines, the lip 9, Fig. 1, retaining the undivided race ring 8 in position is formed on a split conical ring 6.
Patent GB-1207296-A (GB)
Title: PROCESS FOR PREPARING DIETHYLAMINOETHYL p-NITROBENZOATE AND ITS p-NITROBENZOATE SALT
Filed: 1969-05-23
Abstract: 1,207,296. Diethylaminoethyl p-nitrobenzoate. CHAS. PFIZER & CO. Inc. 23 May, 1969 [6 March, 1969], No. 26579/69. Heading C2C. Diethylaminoethyl p-nitrobenzoate and its p-nitrobenzoate salt are prepared by reacting diethylaminoethanol with at least 1À75 molar proportions of p-nitrobenzoic acid in an inert, water-immiscible solvent having a boiling point not higher than the diethylaminoethanol, maintaining the solvent mixture at reflux temperature and continuously removing byproduct water in the form of a solvent-water azeotropic mixture until esterification is substantially complete, and, if desired, treating the resulting p-nitrobenzoate salt with an aqueous base to form diethylaminoethyl pnitrobenzoate. The solvent is preferably xylene, ethylbenzene or cumene and the concentration of acid in the reaction mixture is preferably 3À0 to 4À2.